Floor.



Patented June 24, I902.

B. A. STEVENS. FLOOR. (Applies Mon filed Feb. 28. 1902 (No Model.)

INVENTOR WITNESSES f Attorneys.

UNITED STATES PATENT OFFICE.

BENJAMIN A. STEVENS, OF TOLEDO, OHIO.

FLOOR.

SPECIFICATION forming part of Letters Patent N 0. 703,159, dated June 24, 1902. I

Application filed February 28, 1902. Serial No. 96,047. (No model.)

To (tZZ whom, it may concern:

Be it known that I, BENJAMIN A. STEVENS, a citizen of the United States, residing at Toledo, county of Lucas, State of Ohio, have invented a certain new and useful Improvement in Floors; and I declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use the same, reference being had to the ao-' of each of the timbers there is formed three.

parallel longitudinal grooves B B and O.- The grooves B B are toward the edges of the timber and are of sufficient depth so that the head of a nail will lie therein without protruding beyond the surface. The center groove 0 is deeper and broader than the others.

The timbers arelaid side by side and nailed together by nails extending through one into the other, the heads of the nails coming with in the grooves 13 B.

A flooring made of timbers of the kind above described will remain level under all ordinary conditions and when subjected to the influence of greatchanges of climate, or conditions that cause distortion of ordinary floors.

What I claim is p 1. In a floor, the combination of timbers, each of said timbers having a longitudinal groove at the center of one of its faces, and one or more longitudinal grooves between the central groove and an outer edge, said timbers having their outer edges in contact and being joined together by nails passing through one timber into the contiguous timber, the heads of said nails coming into the last-named groove.

2. In a floor, the combination of a plurality of timbers, each of which is provided on one of its vertical sides with a central longitudinal groove and a longitudinal groove on each side of said central groove, and nails extending through one of said timbers, the heads of said nails entering the latter grooves.

In testimony whereof I sign this specification in the presence of two Witnesses.

BENJAMIN A. STEVENS.

Witnesses:

ROY R. STUART, J. K. HAMILTON. 

